酸化チタン乾燥物 - Chiyoda Kakoh Construction Co., Ltd.

Title:

酸化チタン乾燥物

Document Type and Number:

Japanese Patent JP4220495

Kind Code:

B2

Abstract:

To provide a porous group 4 metal oxide which is useful as a catalyst having excellent thermal stability, a large specific surface area, controlled and sharp pore diameter distribution, and outstanding reaction selectivity, and containing highly dispersed catalyst metal or as a catalyst carrier.

The porous titania is obtained by adding, as a grain growth suppressing agent for suppressing the grain growth at the time of firing, an oxyanion and/or metal carbonyl anion containing a metal selected from P, S, Mo, W, V, B, Al and Si or a metal cation selected from Fe, Ni, Co, Mg, Mn, Pt, Pd, Rh and Ru to hydrosol or hydrogel or a dried material of them of hydrous titanium hydroxide expressed by general formula: MO2-nH2O (wherein, M represents titanium (Ti) being a group 4 metal, and n is ≥0.02), and then drying and firing the resulting mixture. The porous titania has a specific surface area of ≥80 m2/g when it is fired under the condition of 500°C for 3 h.

Inventors:

Hidehiko Kudo
Shinichi Inoue
Toru Takatsuka
Akihiro Muto
Takeo Ono

Application Number:

JP2005177206A

Publication Date:

February 04, 2009

Filing Date:

June 17, 2005

Export Citation:

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Assignee:

Chiyoda Kakoh Construction Co., Ltd.

International Classes:

C01G23/047; B01J20/06; C01G23/053; B01J21/06; B01J23/28; B01J23/30; B01J23/745; B01J23/755; B01J27/053; B01J27/18; B01J27/19; C10G2/00; C10G35/06; C10G45/04; C10G47/04; B01J35/10; B01J37/30

Domestic Patent References:

JP60050721B2
JP8022378B2
JP62029095B2
JP57044605B2
JP3755732B2
JP4017366B2
JP4054563B2

Foreign References:

US5021392
US4511455

Attorney, Agent or Firm:

Katsuo Naruse
Tomohiro Nakamura
Aoya Kazuo
Masashi Torino
Eiichi Sano
Mitsunaga Igarashi
Kazuya Sasaki

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